62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
/* Copyright (C) 2012 J.F.Dockes
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _EXPANSIONDBS_H_INCLUDED_
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#define _EXPANSIONDBS_H_INCLUDED_
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#include <string>
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#include <vector>
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#include <xapian.h>
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#include "unacpp.h"
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#include "synfamily.h"
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/** Specialization and overall creation code for the term expansion mechanism
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* defined in synfamily.h
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*/
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namespace Rcl {
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/** A Capitals/Diacritics removal functor for using with
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* XapComputableSynFamMember. The input term transformation always uses
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* UNACFOLD. Post-expansion filtering uses either UNAC or FOLD
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*/
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class SynTermTransUnac : public SynTermTrans {
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public:
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/** Constructor
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* @param op defines if we remove diacritics, case or both
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*/
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SynTermTransUnac(UnacOp op)
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: m_op(op)
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{
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}
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virtual std::string operator()(const std::string& in)
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{
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string out;
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unacmaybefold(in, out, "UTF-8", m_op);
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LOGDEB2(("SynTermTransUnac(%d): in [%s] out [%s]\n", int(m_op),
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in.c_str(), out.c_str()));
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return out;
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}
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UnacOp m_op;
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};
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/** Walk the Xapian term list and create all the expansion dbs in one go. */
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extern bool createExpansionDbs(Xapian::WritableDatabase& wdb,
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const std::vector<std::string>& langs);
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}
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#endif /* _EXPANSIONDBS_H_INCLUDED_ */
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